Ergo Balls 40mm Black

At 40mm across, roughly 1.57 inches, the Ergo Balls 40mm Black is one of four sizes in the Ergo Balls range. It is a black silicone ball stretcher built for the scrotum, and the 40mm measurement tells you what to expect before you wear it.

Pure Liquid Silicone Construction

This version is made from Pure Liquid Silicone, and the material is the main reason it feels different from a firmer stretcher. The silicone is very soft and flexes easily around the body. Sportfucker took its earlier Ergo Ball Stretchers and rebuilt them in this softer compound, so the shape stays familiar while the feel changes. Silicone of this type holds its form well between uses, but it should be kept away from heat and direct sunlight, since both can break it down over time.

Four Sizes and Placement

The 40mm model sits in the middle of a range that runs through four diameters, so buyers can compare the stretch of each size side by side. Color is listed as black only. The packaging carries a white circle in its upper right corner, which shows how the stretcher is meant to be worn. Wash the stretcher before and after each use, pat it dry with a soft cotton towel, and let it dry fully before storing it.